– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Sat 07 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Sat 07 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Sat 07 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMild with heavy rain (total 33mm), heaviest during Sat night. Becoming colder with a moderate fall of snow heaviest on Mon morning. Freeze-thaw conditions (max 8°C on Sat night, min -3°C on Sun night). Wind will be generally light. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Wed morning. Becoming milder with heavy rain (total 47mm) on Wed afternoon. Freeze-thaw conditions (max 4°C on Wed afternoon, min -4°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  | |  | |  | | | | | | |  | |
heavy rain | rain shwrs | some clouds | light snow | light snow | light snow | light snow | cloudy | light snow | mod. snow | light snow | heavy rain | light snow | light snow | light snow | light snow | light snow | some clouds | some clouds | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | 4 | 4 | 3 | 5 | — | 2 | 6 | 5 | — | 5 | 1 | 2 | 2 | 1 | — | — | |
32 | 1.2 | — | — | — | — | — | — | — | — | 16 | 30 | — | — | — | — | — | — | — | |
max °C | 8 | 6 | 4 | 0 | -1 | -1 | -3 | 0 | 1 | 1 | 2 | 4 | 2 | 1 | 1 | -2 | 0 | 0 | -4 |
min °C | 6 | 5 | 1 | -3 | -1 | -2 | -3 | -1 | 0 | 1 | 2 | 3 | -1 | 0 | 0 | -4 | -1 | -3 | -5 |
3 | 2 | -3 | -5 | -4 | -5 | -6 | -4 | -2 | -3 | -3 | -2 | -3 | -2 | -4 | -4 | -3 | -3 | -5 | |
1800 | 1200 | 950 | 350 | 350 | 400 | 0 | 450 | 550 | 700 | 800 | 1250 | 600 | 550 | 650 | 0 | 400 | 550 | 0 | |
Cloud base (m) | 550 | 650 | 1400 | 600 | 700 | 600 | 600 | 700 | 650 | 600 | 550 | 550 | 600 | 600 | 650 | 700 | 1550 | 600 | 1700 |
 | — | 7:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — |
 | — | — | 7:01 | — | — | 6:04 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mild with heavy rain (total 33mm), heaviest during Sat night. Becoming colder with a moderate fall of snow heaviest on Mon morning. Freeze-thaw conditions (max 8°C on Sat night, min -3°C on Sun night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed morning. Becoming milder with heavy rain (total 47mm) on Wed afternoon. Freeze-thaw conditions (max 4°C on Wed afternoon, min -4°C on Thu night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
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* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.